Received: from maia.hub.org (unknown [200.46.208.211]) by mail.postgresql.org (Postfix) with ESMTP id 42931632EBA for ; Wed, 7 Apr 2010 02:41:26 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.208.211]) (amavisd-maia, port 10024) with ESMTP id 31230-06 for ; Wed, 7 Apr 2010 05:41:13 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from moon.antora.ru (moon.antora.ru [89.111.189.180]) by mail.postgresql.org (Postfix) with ESMTP id 98A066324A3 for ; Wed, 7 Apr 2010 02:41:15 -0300 (ADT) Envelope-to: pgsql-sql@postgresql.org Received: from moon.inner.space ([10.1.1.5] helo=moon.antora.ru) by moon.antora.ru with esmtp (Exim 4.67) (envelope-from ) id 1NzO0l-0000jF-LU for pgsql-sql@postgresql.org; Wed, 07 Apr 2010 09:41:11 +0400 Received: from [192.168.1.6] [178.34.156.239] by moon.antora.ru (Axigen) with (DHE-RSA-AES256-SHA encrypted) ESMTPSA id 1C68D9; Wed, 7 Apr 2010 09:41:11 +0400 Message-ID: <4BBC1AF6.1000200@bankir.ru> Date: Wed, 07 Apr 2010 09:41:10 +0400 From: silly sad User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.5) Gecko/20100111 Thunderbird/3.0 MIME-Version: 1.0 To: Lee Hachadoorian CC: pgsql-sql Subject: Re: Table Design for Hierarchical Data References: In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Scan-Signature: a53f3b8dd6c7555223c35ed5bfb584f6 X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-0.672 tagged_above=-10 required=5 tests=AWL=-0.673, BAYES_50=0.001 X-Spam-Level: X-Archive-Number: 201004/13 X-Sequence-Number: 33940 single table. nested tree + ordinal parent reference. nests are calculated in a trigger on insert.